Eaton CB3033T120480GRA Pringle bolted pressure contact switch - UL Listed
Part Number: CB3033T120480GRA
Quick Summary
CB3033T120480GRA is a bolted pressure contact switch for high-capacity power distribution in industrial facilities. Engineers often face nuisance trips, installation challenges, and limited protection options in large, top-fed switchgear. UL Listed certification underpins safety compliance, while NEMA ratings for enclosure support rugged indoor and outdoor environments. With a three-pole design, top-feed fuse configuration, and ground-fault protection, this Eaton device delivers reliable protection and precise coordination. By combining a capacitor-trip SPVR with a fault-detection transformer, it reduces downtime, simplifies wiring, and scales with motor-control center needs. Warranty alignment and Eaton support streams further business value for maintenance teams. Its compatibility with standard panel layouts speeds procurement and installation while meeting industry norms.
Product Information
Extended Description
CB3033T120480GRA Eaton: Eaton pringle bolted pressure contact switch,Single-phase relay with capacitor trip device (SPVR), BFD with three on lights (does not trip),3000A,120V,Top feed,Ground fault,480V,Three-pole,Three-wire,Fusible
Product Name
Eaton pringle bolted pressure contact switch
Catalog Number
CB3033T120480GRA
UPC
782116951017
Product Length/Depth
22.5 in
Product Height
28 in
Product Width
40 in
Product Weight
390 lb
Warranty
Eaton Selling Policy 25-000, one (1) year from the date of installation of the Product or eighteen (18) months from the date of shipment of the Product, whichever occurs first.
Certifications
UL Listed
Catalog Notes
OPTIONAL Ground Fault Relay, Blown Fuse Detection, Single Phase Protection, Kirk Provisions, Auxiliary Contact Provisions, AVAILABLE.
Feed type
Top
Fuse configuration
Top feed
Ground
Ground fault with control power transformer
Number Of Poles
Three-pole
Number of wires
3
Switch type
Electrical trip with charge-before-close mechanism
Type
Pringle bolted pressure contact switch
Amperage Rating
3000A
Control voltage
120 V
NEMA rating
NEMA 1, NEMA 3R, NEMA 4, NEMA 12
Protection
Fusible
System voltage
480 V
Voltage - max
480 V
Voltage rating
480 V
Special features
Single-phase voltage relay with capacitor trip device (SPVR), BFD with three normally on lights (does not trip)
Commercial Distribution, Switching Devices, Volume 2, Tab 1
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Switching Devices
Eaton Specification Sheet - CB3033T120480GRA
Feature: High-current protection up to 3000 A with a 480 V system voltage. Business Impact: Enables reliable control of large motors and feeders, reducing the risk of cascading faults in critical lines. Application: Ideal for motor control centers and high-load distribution panels where uptime matters. Feature: Top-feed fuse configuration and three-wire, three-pole design. Business Impact: Simplifies wiring, enhances fault isolation, and supports modular panel layouts for scalable installations. Application: Suitable for new builds and retrofits in process plants and manufacturing lines. Feature: SPVR with capacitor trip device and ground-fault protection. Business Impact: Improves selective coordination and minimizes nuisance trips, lowering maintenance costs. Application: Critical in facilities with sensitive equipment and strict safety standards. Feature: UL Listed certification and NEMA-rated enclosure compatibility. Business Impact: Ensures regulatory compliance and rugged performance in diverse environments. Application: Enclosures in harsh indoor/outdoor settings across industrial sectors. Feature: Robust operational details and diagnostics with three on lights for status indication. Business Impact: Accelerates fault diagnosis and reduces downtime during maintenance. Application: Control panels, power distribution centers, and safety-critical installations. Feature: Comprehensive compatibility with 120 V control voltage and 480 V system operation. Business Impact: Streamlines integration with existing control schemes and power distribution infrastructure. Application: Retrofitting or upgrading legacy switchgear in process and manufacturing facilities.
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FAQs
Yes. The CB3033T120480GRA uses a top-feed, three-pole design with a fusible configuration, aligning with standard Eaton panel layouts and common motor control center installations. Its 120 V control voltage also integrates smoothly with typical control circuits, reducing wiring changes during retrofits.
The SPVR capacitor trip device provides a single-phase protection option that can trip on fault conditions while allowing controlled pre-charge. When combined with ground-fault protection, it improves selective coordination, minimizes nuisance trips, and protects downstream equipment in 480 V feeders up to 3000 A.
This switch is well-suited for motor control centers, process lines, and large distribution panels in manufacturing, energy, and general industrial facilities. Its three-pole, fusible, top-fed arrangement supports robust protection for high-current equipment while fitting into rugged indoor and outdoor enclosures (NEMA 1, 3R, 4, 12).
CB3033T120480GRA carries UL Listed certification, which supports compliance with safety standards for industrial electrical equipment. While specific SIL, CE, or IP ratings aren’t listed, the product’s NEMA compatibility and UL Listing help meet typical U.S. industrial compliance requirements.
The device’s robust protection, SPVR capability, and status indicators reduce downtime and maintenance uncertainty. Its compatibility with standard panels speeds commissioning, while UL compliance minimizes risk of non-compliance fees. Over time, this translates into lower maintenance costs and improved system reliability.